H3C S9500 Series Operation Manual page 21

Operation Manual – MPLS L3VPN
H3C S9500 Series Routing Switches
Perform the following configuration in the OSPF view to configure Domain ID:
Configure Domain ID
Return to the default value
By default, id-number is 0 and id-addr is 0.0.0.0.
It is recommended that all OSPF instances in a VPN are configured with either the
same domain ID or the default value.
Caution:
The configured value will not take effect unit the command reset ospf is executed.
Step 3: Configure tag for imported VPN route (optional)
If a VPN Site links to multiple PEs, routing ring may present when the routes learned by
MPLS L3VPN are received by another PE router in being advertised by category-5/-7
LSA of a PE to the VPN Site. To solve this problem, you should configure Route-tag. It
is recommended to configure identical Route-tag for the PEs in the same VPN.
Perform the following configuration in the OSPF view to Configure tag for imported VPN
route:
Configure tag for imported VPN route
Return to the default value
Caution:
The configured Route-tag will not take effect unit the command reset ospf is executed.
tag-number is used to identify Tag value; by default, the first two bytes are fixed, that is,
0xD000, and the last two bytes is AS number of local BGP. For example, the AS
number of local BGP is 100, and then its default tag value is 3489661028 in decimal
notation. This value is an integer ranging from 0 to 4294967295.
Step 4: Configure Sham-link (optional)
To do...
To do...
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Chapter 1 MPLS L3VPN Configuration
Use the command...
domain-id { id-number | id-addr }
undo domain-id
Use the command...
route-tag tag-number
undo route-tag